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FUTUR ANTÉRIEUR

Le Futur Antérieur in French Grammar

The futur antérieur corresponds to the English future perfect. We use the futur antérieur to talk about a future action that will have happened by another future point or action. This tense also expresses predictions or suppositions about what may have happened in the past. We form the futur antérieur using the futur simple form of avoir or être as an auxiliary, followed by the passé participe (past participle) of the main verb.

TL;DR

The futur antérieur expresses a future action that will be completed before another future action. It is formed with the futur simple of avoir or être + the past participle: Quand tu arriveras, j'aurai déjà fini (When you arrive, I will have already finished). It also expresses probability in the past: Il aura oublié (He must have forgotten).

When to use the futur antérieur in French

Step 1

Take the futur simple of avoir or être

J'aurai fini

Step 2

Add the past participle of the main verb

tu arriveras

We use the futur antérieur in the following cases:

How to conjugate the futur antérieur

AuxiliaryUse avoir or être in futur simple + past participle
Past Participle
AUXj'aurai
PARTparlé
AUXje serai
PARTparti(e)

Agreement of the participe passé

With être

Used for Vandertramp verbs and pronominal verbs. Past participle agrees with subject.

Elles seront allées.

With avoir

Used for most verbs. Past participle agrees with preceding direct object.

La lettre qu'il aura écrite.

How to form the negative with the futur antérieur

ne + auxiliary + pas + past participlePlace the negation around the auxiliary verb.
Je n'aurai pas attendu.